William Mitchell Kendall (13 February 1856 – 8 August 1941) was an American architect who spent his career with the New York firm of McKim, Mead & White, the leading American architectural practice at the turn of the century, renowned for its classical work. Kendall joined the firm in 1882, became a partner in 1906, and remained with the firm until his death in 1941. He was closely associated at the firm with partner Charles Follen McKim until McKim's death in 1909, and added a refined delicacy to McKim’s somewhat severe Roman classicism.